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Cat modeling data uncertainty and its impact 01
1.
© 2014 ESH
Consulting Services
2.
Data uncertainty and
its impact for CAT Modeling “It’s tough to make predictions, specially about the future” – Yogi Berra. In this brief piece of work, I would like to show and share with you, a summary of the findings I have discovered in almost 8 years working as CAT Modeling Analyst, particularly for Latin American Clients (Mexico, Colombia, Costa Rica, etc). These pages will show you why it is important to get the most accurate data for the risks to be modeled, both for the Modeler, the Client, the Insurance Company, the Reinsurers, etc. © 2014 ESH Consulting Services
3.
Data uncertainty and
its impact for CAT Modeling Data quality it’s crucial in order to perform a reasonably good CAT Modeling Analysis. The following examples will help us to visualize the importance of collecting much and better information about the Risks. The risk I have chosen is a REAL building and for most of the missing data, you will only need to invest a bit of time to search for information in the Internet. © 2014 ESH Consulting Services
4.
Data uncertainty and
its impact for CAT Modeling Case Study: Mexico City, Torre Mayor The Torre Mayor is currently one of the tallest buildings in Mexico City. It was finished in 2003 and the 55 levels were occupied almost immediately by large and very important National and International Companies. Building site is located in one of the areas for which the soil is not really the best for such a high edification and the effects of seismic resonance and liquefaction could have a serious impact if the building engineering was not the best. The estimated replacement cost for this tower is approximately USD 280 Millions, not considering Contents nor Time Element Coverages. © 2014 ESH Consulting Services
5.
Data uncertainty and
its impact for CAT Modeling Case Study: Mexico City, Torre Mayor Tipically, Insurance Companies get the following data in order to quote the Risk: GeoCoding: Old CRESTA Zone 11 or AMIS Critical Zone E. Replacement value: USD 280 Million (only for Buildings Coverage). Constructive type: reinforced concrete. Occupancy: General Commercial. Year of construction: Unknown. Number of stories: unknown, or possibly the real figure, 55 stories. Deductible: 5%, but not specific if it is based on the replacement value or the amount of loss. Policyl limit: either USD 280 Million or even not provided. © 2014 ESH Consulting Services
6.
Data uncertainty and
its impact for CAT Modeling Case Study: Mexico City, Torre Mayor After running PML estimation using one of the most famous commercial CAT Models with the data originally provided, you will get this: © 2014 ESH Consulting Services Return Period (years) Annual Aggregated Loss (USD) TVaR (USD) 50 109,490 1,629,160 100 704,258 2,908,937 200 1,594,434 4,754,204 250 1,904,194 5,505,919 1,000 6,900,288 11,605,322 1,500 7,660,425 14,543,261 5,000 14,294,997 20,414,315 10,000 26,553,633 26,533,633 Annual Aggregated Loss 33,132 Standard Deviation 468,885 Coefficient of Variation 14.1520
7.
Data uncertainty and
its impact for CAT Modeling Case Study: Mexico City, Torre Mayor What could happen with the previous figures using more accurate data? After investing about 10 minutes using Google, I found this: GeoCoding: Latitude 19.4242, Longitude -99.1756 (improved) Replacement value: USD 280 Million (only for Buildings Coverage). Constructive type: steel reinforced concrete frame, appliying seismic resistance technology (improved). Occupancy: Professional and Consultancy Services (Offices) (improved). Year of construction: 2003 (year finished) (improved). Number of stories: 55 stories. Deductible: 5% of the replacement value. Policyl limit: either USD 280 Million (Total Loss). Let’s see next the effect of these changes in the PML estimation… © 2014 ESH Consulting Services
8.
Data uncertainty and
its impact for CAT Modeling Case Study: Mexico City, Torre Mayor After running PML estimation using the improvements in data, you will get this set of results: © 2014 ESH Consulting Services Return Period (years) Annual Aggregated Loss (USD) TVaR (USD) 50 0 518,264 100 0 1,036,528 200 135 2,073,050 250 1,733 2,591,204 1,000 3,834,701 8,351,572 1,500 5,403,906 10,977,725 5,000 9.823,017 16,868,176 10,000 23,913,335 23,913,335 Annual Aggregated Loss 10,365 Standard Deviation 326,642 Coefficient of Variation 31.5139
9.
Data uncertainty and
its impact for CAT Modeling Case Study: Mexico City, Torre Mayor Spotting the differences between exercise 1 & 2 the observed changes are: © 2014 ESH Consulting Services Return Period (years) Annual Aggregated Loss % TVaR % 50 -100 -68.19 100 -100 -64.37 200 -99.99 -56.40 250 -99.91 -52.94 1,000 -44.43 -28.04 1,500 -29.46 -24.52 5,000 -31.28 -17.37 10,000 -9.88 -9.88 Annual Aggregated Loss -69 Standard Deviation -30 Coefficient of Variation 123
10.
Data uncertainty and
its impact for CAT Modeling Case Study: Mexico City, Torre Mayor Cost and Benefit implications: •Cost: •Monetary: practically ZERO •Time: maximum 10 additional minutes dedicated to search for public data and processing time (tipically 1 working day or less). Benefit: •For the Client: the possibility of getting a cheaper Insurance Cost. •For the Insurer: the possibility of getting new Clients and demonstrate to Reinsurers to adequately deal with accurate data for a better Risk Assesment. © 2014 ESH Consulting Services
11.
Thank you for
your interest and time! Eduardo Sandoval Hernández esandovalh180869@gmail.com Cell phone: +52 155 54557789 © 2014 ESH Consulting Services
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